Lubricator.



PATENTED MAY 28, 1907.

J. E. GRANDALL.

LUBRICATOR.

APPLICATION FILED JULYs, 1903.

2 SHEETS-SHEET 1.

110.854.874. l PATBNTBD MAY28,1907. J. B. GRANDALL.

LUBRIGATOR.

APPLIGATION FILED JULY 3| 1903.

2 SHEETS-SHEET 2.

UNITED STATES PArENT oFFIoE.

JAY E. ORANDALL, OF BELVIDERE, ILLINOIS, ASSIGNOR' TO NATIONAL SEWING MACHINE COMPANY, OF BELVIDERE, ILLINOIS, A CORPORA- TION OF ILLINOIS.

LuBnlcAToR.

Patented May 28, 1907.

Application filed Jnly 3,1903. Serial No. 164.128.

To all whom it may concern:

Be it known that I, JAY E. ORANDALL, a citizen of the United States, residing at Belvidere, in the county of Boone and State of Illinois, have invented certain new and useful Im rovements in Lubricators, of which the Ifol owing is a full, clear, and eXact speciiication.

My invention relates more particularly to forced feed lubricators of the multiple type, and it has forits primary object to provide improved and simple means whereby the sight feed passages may be supplied with water or other sultable liquid through `which to feed the oil, and the amount of lubricant being supplied through any one lubricating duct or passage may be conveniently observed and controlled independently of the others.

A further object of my invention is tol provide an improved and simple construction of forced feed lubricator which will be efficient and ineX ensive.

With t ese ends in view, my invention consists in certain features of novelty in the construction, combination and arrangement of parts by which the said object, and certain other objects hereinafter appearing, are attained, all as fully described with reference to the accompanying drawings, and more par-A ticularly pointed out in the claims.

In the said drawings-Figure 1 is a front elevation of my improved lubricator. Fig. 2 is a vertical cross section thereof 'on the line 2 2, Fig. 1. Fig. 3 is a diagrammatic view illustrating the entire system, comprising the engine or other part to be lubricated, the

lubricator proper, the pump and the reservoir, Fi 4 is an enlarged detail longitudinal sectiona view of the pressure-regulating valve hereinafter described, and Fig. 5 is an enlarged detail section of the means for holding the strainer.

1 isthe body of the lubricator, which may be provided with any suitable means, such as perforated lugs 2, whereby it may be secured to the dashboard of an automobile or other suitable support, and which is provided at the top with any suitable filling cap 3, whereby a quantity of water or other similar liquid may be placed therein for su plying the bulls-eye chambers 4, each of willi connected with the body 1 by passages 5 and ch latter isy 6 and a stand-pipe 7 which rises in the body 1 a suflicient distance above the bottom thereof to leave below the upper end of the standpipe a considerable supply of water for replenishing the chambers 4, each of which is also connected with the body 1 by means of a by-pass passage or branch S which leads to the bottom of body 1 and is controlled by an upwardly projecting valve 9. Each of the passages 6 which communicates with the stand-pipe 7 is controlled by la horizontal valve 10`which closes the passage 5, but is provided with a reduced neck 11 so that it does not interfere with communication between the bulls-eye chamber 4 and the body 1 through the passage 8. Hence, if the valve 10 be closed and the valve 9 opened the water in the body 1 will rise in the bulls-eye chamber 4 until it finds its level, and the level in the bulls-eye chamber may be raised by creating pressure in the body 1, and the level thus raisedA maintained almost indelinitely by closing the valve 9 so that the water cannot run back.

In practice, the water in the body 1 is depressed until it is below the upper endof the stand-pipe 7, to the level, for example, indicated by the dotted line 12, and the level in the chamber 4 is thereby elevated to a point above the bulls-eye glass 13, such, for example, as that indicated by the dotted line 14. The water is thus depressed in the body 1 and raised in the chamber 4 by the pressureof the oil above it in the body 1, and this pressure is supplied through-an oil supply pipe 15 from a pump 16, or any other suitable source of pressure, and conseuently, the oil in the body 1 is at liberty to descend` through the stand-pipe 7 and the passages 6 and 5 without permitting any of the water in body 1 to escape, as soon as the regulating valve 10 is opened, the latter being opened as far as required for producing the necessary supply of lubricant to the particular part to be lubricated by the oil which rises from chamber 4. The oil rising in the passage 5 will form into separate drops and ascend through the body of water in the chamber 4, and hence may be readily observed through the bulls-cye glass 13, and in order that the drops may be clearly delined or formed without danger of adhering tothe side walls of chamber 4, a dropping nipple or choke 17 is secured to the upper end of passage 5. 'lhe back of each of the bulls-eye chambers 4 is made concave and preferably covered with a coating of white enamel, 1S, for rellecting the light through the drops. The oil rising in the bulls-eye chamber 4 collects above the water level therein in a bulb or chamber 19, connected by anarrow neck or passage 2() with the upper side of each of the bulls-eye chambers and eventually overflows into the upper end of a downwardly extending elbow passage 21, which, for convenience and simplicity, is formed in an L- shaped projection 22 cast integrally with the bulb 19. Each of these passages 21 is connected with one of the ducts or pipes 23 which conduct the lubricant to various parts of the engine or other machine to be lubricated, the example shown in the drawings being a gasolene engine, 24.

Extending transversely across the body 1 near the bottom thereof are a number of cores 25, one for each of the bulls-eye chambers 4. These are bored longitudinally through both sides of the body 1, and inserted in each is a stem 26 having on one end an upright or angular portion 27 in which the passage is formed and the choke 17 is secured, thepassage 6 being formed in the longitudinal portion 26, and o'n the other end of the stem is secured a taper nut 2S, whose tapered end fits into al seatof complementary shape in the back of body 1, so that by tightening up the nut the stem 26 may be drawn home into its socket and a iiange 29 on the stem may be forced-firmly against the face of body 1, against a packing if desired, to insure against leakage. A part of the bypass passage 8 is formed in the core 25, as shown in Fig. 2, and its continuation in the stem 26.

Extending transversely across the body 1 at the upper part, are a number of cores 30, one for each of the passages 21 and connected. to each of the ducts 23, by any suitable means, such as an elbow, 31, is a tube 32 which passes through the core 30 and has its opposite end secured in a boss or socket 33 in the back of bulb 19 and in line with the lower portion of passage 21, thus ati'ording support for the bulb 19 and, at the same time, connecting it with the duct 23 and bringing all of the ducts 23 at the back of the lubricator body.

'.lhc bulls-eye chamber 4 and the bulb 19 are. preferably formed in one piece and connected to the part 27 by any suitable coupling 34 and the front side of each ofthe bullseye chambers is formed with a threaded lens tube 35, on which is secured av lens -llange 36 for removably holding the glass 13 in place. rlhe water level in the body 1 may be observed through a bulls-eye 37 of similar construction arranged at one end of thev body 1, and the oil level in the body 1 may be observed through a similar bulls-eyc 3N at the opposite end of body 1 and at a. higher level than bulls-eye 37 so as to determine when the supply in the main tank has become exhausted.

The lubricant in exe-ess of thatI drained olf through the ducts 23 discharges from the body 1 through a pipe or passage 39, and is thereby conducted back to a tank or main reservoir 40 into which ity discharges, preferably through a strainer 41 in the form ol" a closed cylinder of wire gauze, or other suitable material, having its outer end secured in a bushing 42 in which is screwed the union 44 which couples the pipe 39 to the strainer, the bushing 42 being screwed into a ring '13 secured to the tank, so that the strainer may be removed with the bushing 42 when it is desired to clean it.

Located within the o vcrllow or return pipe 39 is a pressure regulating valve of any suitable form which closes against the pressure coming through the pipe 39 from the body 1 of the lubricator. This valve preferably consists of the simple and ellicient construction shown in Fig. 4, comprising an ordinary union 45 in one member of which is formed a valve seat 46 against which rests a ball 47 adapted to close the passage through the union and hold it closed. until the pressure 'above theball in pipe 39 exceeds the resistance of a suitable spring 48, preferably a coil spring, located in the neck of the lower member of the union, and adjustably held in place by a bushing 49 which is considerably elongated and screw-threaded in said neck oll the lower union member, so that it at once constitutes a means of varying the tension of the spring 48 so as to give the valve 47 the proper resistance for maintaining sntlicient pressure in the body 1 of the lubricator, and a passage for the lubricant to pass when the valve is open. The end of the bushing 49 may be formed with a screw driver notch 59, whereby it may be turned.

Having thus described my invention, what l. claim as new therein and desire to secure by Letters Patent is:

1. In a forced feed lubricator, the combination of a receiver for oil and another liquid, a bulls-eye chamber provided with an inlet at its bottom communicating with said receiver by separate passages at two d i llerent elevations,.means for controlling said separate passages individually, means l'or producing pressure on the lubricant in said receiver` and means for conducting the lubricant away from said bulls-eyc chamber.

2. ln a forced feed lubricator, the combination of a receiver for oil and another liduid, a bulls-eye chamber communicating with said receiver at dill'erent elevations therein through separate passages, means t'or controlling said passages individually, a discharge passage for carrying the lubricant lOO away from said bulls-eye chamber communicating with the chamber located near the top thereof, whereby water carried upwardlyby the lubricant rising in the bullseye chamber will not pass directly into said discharge passage, and means for supplying said recelver with lubricant under pressure.

3. In a forced feed lubricator, the combination of a receiver for oil and another liquid, a bulls-eye chamber communicating with said receiver by separate passages at different elevations therem, means for controlling said passages individually, means for conducting the lubricant away from the bulls-eye chamber, means for supplying said receiver with lubricant under pressure,V an overflow passage from said receiver, and a pressure regulator for resisting the overflow from the receiver.

4. In a forced feed lubricator, the combination of a receiver for oil and another liquid, a bulls-eye chamber communicating therewith at different elevations therein by separate passages, means for controlling said passages individually, means for conducting the lubricant Vaway from said bullseye chamber, a pump for continually forcing lubricant into said receiver under pressure, an overflow from said receiver communicating with the inlet of said pump, and means in said overflow for resisting the discharge from said receiver.

5. In aforced feed lubricator, the combination of a receiver for oil and another liquid, a stand-pipein said receiver, said receiver also having a discharge outlet near its bottom, a bulls-eye chamber communicating with said stand-pipe and discharge outlet, means for control ing communication between said bull's-eye chamber and said discharge outlet and stand-pipe individually, means for supplying lubricant to said receiver under pressure, and means for conducting the lubricant away from said bulls eye chamber.

6. In a forced feed lubricator, the combination of a receiver for oil and another liquid, having a hollow core extending transversely thereacross, a stand-pipe rising from said core, a hollow stem extending through said core and having its hollow communicating at one end with said stand-pipe, a valve for controlling said passage in said stem, a bull's-eye chamber communicating with the other end of said hollow stem, means for tightening said st-em in said core, means for supplying said receiver with oil under pressure, and means for conducting the oil away from said bulls-eye chamber, said bulls-eye chamber communicating with said receiver at another point below the top ofsaid stand- )ipe and means being provided for controlling said communication.

7. In a forced feed lubricator, the combination of a receiver for eiland another liquid,

- the upper side for conducting the a hollow core extending transversely thereacross, a stand-pipe extending from the upper side of said core and communicating therewith, said core having a separate passage communicating with said. receiver below said stand-pipe and extending through the end of the core, a stem having two longitudinal passages communicating with said standpipe and passage respectively and inserted in said hollow core, means for drawing said stem into said hollow core, a bulls-eye chamber communicating with both of said longitudinal passages, means for controlling said longitudinal passages individually, means for supplying said receiver with oil under pressure and means for conducting the oil away from said bulls-eye chamber.

8. In a forced feed. lubricator, the combination of a receiver for oil and another liquid, a hollow core extending transversely there* across, a stand-pipe rising from said core and communicating therewith, said core also having a separate longitudinal passage communicating with the receiver below said standpipe, a stem fitting in said core and having two longitudinal passages communicating with said stand-pipe and said separate longitudinal passage respectively, means for controlling the resulting longitudinal passages individually, a conical nut threaded on one end of said stem for drawing it into said core and forming a tight joint therewith, a bullseye chamber communicatingwit h both of said longitudinal passages, means for conducting the oil away from said bulls-eye chamber, and means for supplying the receiver with oil under pressure.

9. In a forced feed lubricator, the combination of a receiver for oil and another liquid, means for supplying pressure to said receiver a stem inserted in said receiver and having two separate passages communicating with said receiver at different elevations, means for controlling the resulting passages individually, a bulls-eye chamber supported on said stem and connnunicating with said passages, and means for conducting the lubricant awa-y from said chamber.

10. In a forced feed lubricator, the eombinat-ion of a receiver for oil, a bull's-eye chamber having its lower end in communication with said receiver, a bulb on the up er end of said bulls-eye chamber, and an el )ow passage in said bulb with its inlet end arranged at lubricant away from said bull).

11. In a forced feed lubricator, the combil nation of a receiver for oil and another liquid, a bulls-eye chamber commumeatmg at its lower end with said receiver at ditl'erent elevations through separate passages, means for controlling said passages individually, a bulb arranged over said bulls-eve chamber, and connecting therewith through a narrow neck, a discharge passage from said bulb having its IOO IIO

inlet end arranged uppermost and turned away from said narrow neck, and nieans for supplying said receiver with oil underpressure.

12. In a forced feed lu'bricator, the combination of a receiver for oil and another liquid, a bulls-eye chamber communicating with said receiver at different elevations therein through separate passages and having the 1o back portion thereof formed concave and provided with a reflecting surface, a bullseye sight-glass arranged opposite said con cave surface, means for controllingr said separate passages individually, means for supply ing oil under pressure to said receiver, and means for conducting the oil away from said bulls-eye chamber.

JAY E. CRANDALL.

Witnesses:

WILLIS L. BROWN, CHARLES E. FORRY. 

